Parallel GC and array object layout: way off the base and laid out in reverse?

Jon Masamitsu jon.masamitsu at oracle.com
Fri Sep 20 16:37:51 PDT 2013


On 9/20/2013 12:59 PM, Aleksey Shipilev wrote:
> On 09/17/2013 03:17 PM, Aleksey Shipilev wrote:
>> Ok, here is the current fix:
>>    http://cr.openjdk.java.net/~shade/8024394/webrev.00/
>>
>> I haven't tested the performance on large scale yet, because wanted to
>> cross-check if this is a viable solution code-wise.
> This fix brings statistically insignificant differences on
>    {SPECjbb2005, SPECjbb2013, SPECjvm2008, SPECjvm98} x
>      x {Linux x86/x86_64,  Solaris x86/x86_64/SPARCv9}

Were you comparing GC pause times for those benchmarks?

Jon

>
> Also, passes JPRT.
>
> -Aleksey.
>



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